A woman has been sentenced to life behind bars for helping her ex-boyfriend murder her elderly husband. A jury in the Court of First Instance unanimously found Liu Aijin, 40, originally from Guangdong, guilty of murder in the 2006 death of Wong Hing-lam, 75. The jury found that Liu, after an arrangement with her ex-boyfriend, had opened the door for the killer, then lay in bed with her husband and son as the man suffocated Wong.